MERCEDES-BENZ S CLASS 2023 Owners Manual

Press on the rear part of fuel "Nller "Oap 1 .Turn the fuel "Nller cap counter-clockwise and
remove it.Insert fuel "Nller cap from above into
bracket 2.Completely insert the pump nozzle into the
tank "Nller neck, hook in place and refuel.Fill the fuel tank only until the pump nozzle
switches o"M.Replace the cap on the "Nller neck and turn
clockwise until it engages audibly.Close fuel "Nller "Oap 1 .Depressurizing the fuel tank (plug-in hybrid with
gasoline engine)Pull switch 1 once brie"Oy.
Indicator lamp 2 will "Oash and the Please
Wait Depressurizing Fuel Tank message will
appear on the driver\bs display.
When the fuel tank is depressurized, indicator
lamp 2 will light up continuously.The Fuel Tank Is Depressurized Ready for
Refueling message will appear on the driver\bs
display and the fuel "Nller "Oap will open auto-
matically.\bDepressurizing the fuel tank may take several
minutes.
The fuel tank can only be depressurized if the conditions described above are ful"Nlled. Other-
wise, drive the vehicle at least 1/3 mile (0.5 km)
and repeat the process.
\bIn the following situations, there is a malfunc-
tion:
= Indicator lamp 2 "Oashes initially and then
goes out.
= The yellow

Only refuel when the fuel "Nller "Oap has
opened automatically.
Charging the high-voltage battery (plug-in hybrid)
Notes on charging the high-voltage battery
*NOTE High-voltage battery damage due to
leaving the vehicle idle for lengthy periods
of time
Lithium-ion batteries experience a natural self-
discharge.
Exhaustive discharging can therefore occur if
the vehicle is idle for several months. This can
damage the high-voltage battery.
To avoid damage, please observe the fol-
lowing recommendations when handling
the high-voltage battery.*NOTE Accelerated aging of the high-volt-
age battery due to not observing the fol-
lowing recommendations
As a result of its basic characteristics, the storage capacity of and the amount of energy
available from the high-voltage battery decrea-
ses over the course of its life. Due to this, both the maximum electrical range that can be ach-
ieved by the vehicle and its maximum electri-
cal output can be impaired.
The following factors could accelerate the
aging of the high-voltage battery:
= A high condition of charge, especially if the
vehicle is idle for a lengthy period of time
= Frequent rapid charging with direct current
(mode 4)
= Leaving the vehicle idle for lengthy periods
at high ambient temperatures
To avoid accelerated aging, please
observe the following recommendations
when handling the high-voltage battery.Recommendations for handling the high-voltage
battery:
= Charge the high-voltage battery with direct
current (mode 4) only if necessary.
= If leaving the vehicle idle for lengthy periods,
park up the vehicle with a high-voltage battery
state of charge between 25% and 30%. Do not keep the high-voltage battery continuouslyconnected to power supply equipment.
= If leaving the vehicle idle for lengthy periods of
time avoid high ambient temperatures if possi-
ble.
= Check the high-voltage battery\bs state of
charge every six weeks (  page 244).
= Charge the high-voltage battery if the state of
charge is below 15%.
= Do not disconnect the 12 V battery even if the
vehicle is le"s idle for a lengthy period. Other-
wise, the condition of the vehicle\bs high-volt-
age battery cannot be monitored.
= If the high-voltage battery is used only with
low states of charge, fully charge the high-volt-
age battery every six months.230Driving and parking

Depending on the equipment, your vehicle will be
equipped with one of the following vehicle sock- ets:
= Type 1 for AC charging (mode 2/3)
= Type Combo 1 for AC charging (mode 2/3)
and DC charging (mode 4)
Example: Combo 1 vehicle socket
1Socket for AC charging2Socket extension for DC charging\bWhen you use a CCS (Combined Charging
System) charging cable to charge with direct current, both areas of the vehicle socket will
be covered by the charging cable connector.
Charging options for the high-voltage battery
(mode 2, 3 or 4):
= Charging through recuperation while the vehi-
cle is in motion
= AC charging when stationary:
- at a mains socket (mode 2)
- at a wallbox or charging station (mode 3)
= DC charging when stationary:
- at a rapid charging station (mode 4)
Depending on the country-speci"Nc vehicle equip-
ment and your vehicle\bs charging cable, single-
phase AC charging is also possible.
Observe the di"Merent grid requirements of your
current location when charging. Use only charging
cables that conform to the grid requirements.
Consult a quali"Ned electrician or your local grid
operator if you have any questions.
It is recommended that you charge the high-volt-
age battery at a wallbox or charging station due to
the improved charging performance and better
charging e"Pciency o"Mered.
System limits
The power output of the high-voltage battery may
be impaired by the following:
= High or low outside temperatures
= Electrical auxiliary consumers in the vehicle
being switched on, e.g. the air conditioning system being operated
= Extended periods without charging
The charging time of the high-voltage battery may
be increased by the following:
= High or low outside temperatures
= Extended periods without charging
= The maximum available charge current of the
charging facilityDriving and parking231

Stowing the charging cable
Always stow the vehicle\bs charging cable in the
charging cable bag provided in the trunk.
Place the charging cable bag on the trunk
"Ooor. Otherwise, the charging cable bag with
the charging cable is not su"Pciently secured.
Notes on charging the high-voltage battery at the
mains socket (mode 2)
&DANGER Risk of fatal injury from incor-
rectly installed component parts
Connecting the charging cable to a mains
socket using incorrectly installed component
parts could cause a "Nre or an electric shock,
for example.
Only connect the charging cable to a mains socket that:
= has been properly installed and
= has been inspected by a quali"Ned electri-
cian
For safety reasons, only use the charging
cable supplied with the vehicle or an
original Mercedes!

light. Otherwise, the charging process may becanceled.
Notes on charging the high-voltage battery at a
wallbox or charging station (mode 3)
&DANGER Risk of fatal injury from incor-
rectly installed component parts
Connecting the charging cable to the vehicle
using incorrectly installed components could
cause a "Nre or an electric shock, for example.
Only connect the charging cable to a
wallbox if:
= The wallbox has been properly installed
= The wallbox has been inspected by a quali-
"Ned electrician
= The charging cable is not damaged
Do not extend the charging cable.Do not use adapters.Observe the safety notes in the operat-
ing instructions for the wallbox.&DANGER Risk of fatal injuries due to dam-
aged components
If you use a damaged component to connect
the vehicle to the charging station, this can
result in "Nre or an electric shock, for example.
Perform a visual inspection of the charg-
ing station for obvious defects, e.g. dam-
age to the housing or on the charging
cable connection.At charging stations without a pre-instal-
led cable, for safety reasons, only use
charging cables that have been tested
and approved by the manufacturer for
charging the high-voltage battery in an
electric vehicle.Do not use a damaged charging cable.Do not use an extension for the charging
cable.Do not use an adapter.Always observe the safety information on
the charging station.Most charging stations must be activated before
the charging process, e.g. using an RFID card.
Observe the on-site operator\bs instructions for the charging station.
The amount of energy dispensed for the charging
process, shown by the charging station, may be
higher than the amount of energy actually absor-
bed by the high-voltage battery. This is the result
of di"Merent levels of charging losses and is descri-
bed as recharge e"Pciency. Charging losses occur,
for example, due to heat that builds up when the vehicle is charging or from auxiliary consumersthat are switched on. Further information onrecharge e"Pciency can be obtained at a quali"Ned
specialist workshop.
Notes on charging the high-voltage battery at a
rapid charging station (mode 4)
&DANGER Risk of fatal injuries due to dam-
aged components
If you use a damaged component to connect
the vehicle to the charging station, this can
result in "Nre or an electric shock, for example.
Driving and parking233

Perform a visual inspection of the charg-
ing station for obvious defects, e.g. dam-
age to the housing or on the charging
cable connection.At charging stations without a pre-instal-
led cable, for safety reasons, only use
charging cables that have been tested
and approved by the manufacturer for
charging the high-voltage battery in an
electric vehicle.Do not use a damaged charging cable.Do not use an extension for the charging
cable.Do not use an adapter.Always observe the safety information on
the charging station.&DANGER Risk of fatal injuries when carry-
ing out maintenance work during the
charging process
During the charging process, the high-voltage
on-board electrical system is under high volt-
age.
Do not perform any maintenance work
during the charging process.
Most charging stations must be activated before
the charging process, e.g. using an RFID card.
Observe the on-site operator\bs instructions for the charging station.
The amount of energy dispensed for the charging
process, shown by the charging station, may be
higher than the amount of energy actually absor-
bed by the high-voltage battery. This is the result
of di"Merent levels of charging losses and is descri-
bed as recharge e"Pciency. Charging losses occur,
for example, due to heat that builds up when the vehicle is charging or from auxiliary consumersthat are switched on. Further information onrecharge e"Pciency can be obtained at a quali"Ned
specialist workshop.
Setting the maximum permissible charging cur-
rent for charging at a mains socket*NOTE Overloading the mains socket due
to excessive charging current
If the charging current is too high, the fuse
could be tripped or the external mains supply
could overheat.
Ensure that the external mains supply
has been designed to handle the charg-
ing current provided.For safety reasons, only use the charging
cable supplied with the vehicle or an
original Mercedes-Benz charging cable.
Mercedes-Benz thoroughly tests these
original charging cables for their suitabil-
ity for high-voltage charging of your vehi-
cle.Purchase these parts at a Mercedes-
Benz service center and obtain advice
there.234Driving and parking

Check the maximum charging current
using the charging capacity shown on
the driver\bs display.
The charging cable supplied is set to a country-
speci"Nc maximum charging current value. When
charging abroad, the maximum value may exceed the permitted value for that country.
Before charging at a mains socket, have the
maximum permissible charging current for the
relevant mains socket or the building installa-
tion checked by a quali"Ned electrician.When charging abroad, observe the country-
speci"Nc laws.
If you have questions concerning the charging
current or if there is a malfunction, please contact
a quali"Ned specialist workshop.
Overview of the charging cable operating unit
The charging cable operating unit shows the cur-
rent status of the charging process.
1Supply voltage indicator2Charging process indicator3Temperature monitor indicator4Safety system indicator
Supply voltage indicator 1
DisplayMeaningLights up whiteThe supply voltage is
connected.Charging process indicator 2DisplayMeaningFlashes greenThe high-voltage bat-
tery is charging.
Temperature monitor indicator 3
DisplayMeaningLights up redThe green LED "Oashes
simultaneously: over-
temperature !

Safety system indicator 4DisplayMeaningFlashes redCharging cable mal-
function !

display and "Oashes or lights up as with indicator
lamp 2.
Overview of the locking statusLocking sta-
tus 3DisplayMeaning6 !

*NOTE Damage due to overheating of
charging cable and charge port
During the charging process, the charging
cable and charge port can heat up within the permissible limits.
The permissible limit values are in"Ouenced by
the following factors:
= the power supply system and the charging
cable are not damaged
= the instructions for handling the charging
cable and the control element on the charging cable have been observed
If the charging cable or charge portbecomes too hot, have the power supply
system checked.*NOTE Damaged or dirty vehicle socket
when the socket "Oap is openAlways keep the socket cover and the
socket "Oap closed when there is no
charging cable connected. This protects
the vehicle socket from dirt and damage.Make sure that the socket cover is
closed properly before closing the socket
"Oap. This can otherwise result in damage
which may prevent the socket "Oap from
being opened again.*NOTE Damage to the vehicle socket or the
charging cable connector due to incorrect
handling
Do not use excessive force (maximum 67.4 lbf
(300 N)) to insert the charging cable connec-
tor into the vehicle socket as far as it will go.
You may otherwise damage the vehicle socket,
the charging cable connector or their con- tacts.
If you feel there is increased resistance,
pull the charging cable connector out of
the socket and reinsert it.
Requirements
= The transmission is in position ].
= The vehicle is unlocked or the distance
between the key and the vehicle does not
exceed 3 "s (1 m).
=
The vehicle is switched o"M. The